Positive Macroscopic Approximation for Fast Attribute Reduction

Table 3

Number of features selected by four algorithms.

No.	Dataset	DMA	REA	PRA	PMA-AR
1	Lung cancer	4	4	4	4
2	Standardized audiology	21	21	22	22
3	Congressional voting	8	8	9	9
4	Balance scale weight and distance	4	4	4	4
5	Tic-tac-toe end game	7	8	8	8
6	Car evaluation	6	6	6	6
7	Chess end game	26	28	29	29
8	Nursery	8	8	8	8